Add specs
Fix preview
Adds permission specs
Fix preview permissions
Fix work package preview permission
Make preview a normal view
Add 'nothing to preview' message
Authorize through #find_optional_project
Reset order of preview texts
Add preview object authorization specs
Authorize preview object access
Preview caption reflects the previewed attribute
Fix comment layout
Merge pull request #1503 from opf/hotfix/9842_new_preview

[Hotfix] 9842 new preview
Replace unless by if
Merge pull request #1694 from netfighter/feature/14376-validation-name-identifier-not-working-when-copying-project
adds new work packages statuses
changes the default data
add rights to view time entries to role member
adds new workflows and two minor changes